Roll crusher



Oct. 27, 1964 N. D. FEE 3,154,258

ROLL CRUSHER Filed May 4, 1962 2 Sheets-Sheet l M'mrod 0. Ree

1N VENTOR.

N. D. FEE

ROLL CRUSI-IER Oct. 27, 1964 2 Sheets Sheet 2 Filed May 4, 1962 Nimrod 0. Fee

' INVENTOR.

United States Patent 3,154,258 ROLL CRUSIER Nimrod D. Fee, 560 Missouri Ave., Deer Lodge, Mont. Filed iviay 4, 1962, Ser. No. 192,462 8 Claims. (Cl. 241-432) The present invention generally relates to roll crushers, and more particularly to a crusher capable of crushing both medium hard and hard rocks as well as feed grains and other materials, by the use of two opposed rollers, one of which is adjustably biased into engagement with the other by pneumatic means.

One of the primary objects of the present invention involves the provision of a rock crusher capable of accommodating rocks of any degree of hardness.

Another object of the present invention involves the use of pneumatic means to bias the crusher rollers toward each other.

In conjunction with the above object, it is also an object of the present invention to provide for the use of one or more tire-like members as the biasing means.

Also, an object of the present invention resides in the provision of an easily adjustable eccentric to limit the movement of one roller toward the other.

Likewise, an object of the present invention involves the provision of a relatively simple trouble-free device highly eifective for its intended purpose.

Additionally, an object of the present invention involves the provision of a rock crusher which is relatively inexpensive to manufacture and particularly troublefree requiring little or no maintenance over long periods of time.

These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

FIGURE 1 is a side elevational view of the device comprising the present invention;

FIGURE 2 is a top plan view of the device comprising the present invention;

FIGURE 3 is a cross-sectional view taken substantially on a plane passing along line 33 in FIGURE 2;

FIGURE 4 is a transverse cross-sectional view taken substantially on a plane passing along line 4-4 in FIG- URE 3; and

FIGURE 5 is a perspective view of the eccentric means used to position the movable roller.

Referring now more particularly to the drawings, reference numeral 19 generally refers to the supporting base of the present invention. This base has been illustrated as comprising two longitudinally extending beams 12, mounted on a foundation 14, however, the present invention is not intended to be limited by the specific beams or foundation illustrated in the drawings, as it is readily apparent that any suitable shaped beams positioned on a supporting surface can be used.

An upstanding support 16, comprising two vertical columns 18 is provided on the rear of the base It) with each column 18 mounted on one of the base beams 12. If so desired, additional braces 20 can be provided.

Secured on the lower forward side of each column 18 is a bearing block 22 journalling a rotatable axle 24 therethrough. These bearing blocks 22, generally secured to the columns 18 in any conventional manner such as by bolts 26, can also, if deemed desirable, be mounted on the beams 12. A crushing roller 23 is fixedly secured to the axle 24 and rotatable therewith. Rotation is imparted to the axle 24 and the crushing roller 28 by means of a drive belt 39 run over a pulley 32 mounted 3,154,253 Patented Oct. 27, 1964 on the outer end of the axle 24 and secured thereto in any suitable manner such as by the key 34. At the other end, the drive belt 3% is engaged with the drive shaft of any conventional source of power.

Positioned forward of and slightly above the crushing roller 28 is a second crushing roller 36 of substantially the same size and shape as the first mentioned roller 28. This second roller is fixedly secured to an axle 38 and rotatable therewith Within bearing blocks 44) mounted by fastening means 42 on the under side of a swinging frame 44 consisting of two downwardly depending frame members 45 each having its upper end hingedly connected to a transverse shaft 48 extending between and secured to a pair of angularly positioned fiat plates 50 each secured to the top of one of the columns 18. This hinged connection is effected by oppositely extending U-shaped bolts 52.

As is apparent from FIGURES 1 and 3 the positioning of the hinged connection behind the forward face of the roller 28 results in a natural tendency for the roller 36 and its supporting frame 44 to swing toward and into engagement with the roller 28. This swinging roller 36 is driven in a manner similar to the roller 28 by means of a pulley 54 mounted on the axle 38 on the side of the device opposite from the pulley 32. This second pulley 54 is driven from a conventional source of power by means of a drive belt 56.

The lower rearward side of the frame 44 is provided with a shoe extending between the frame members 45. This shoe referred to by the reference numeral 58, can be secured by bolts 6% or any other conventional means. This shoe 58 is engaged by an eccentric portion 62 of a shaft 64 extending transversely of the base 14 and rotatably mounted thereon by a pair of opposed bearing blocks 66 thereby enabling the adjustment of the pivotally mounted framework 44 and its roller 36 relative to the roller 28 as may be required. In order to maintain the eccentric portion 62 in its adjusted position, a ratchet wheel 68 is provided at the outer end of the shaft 64 and a dog or pawl 70 is mounted on the base 1!} and engageable with the teeth of the ratchet wheel 68. As illustrated in FIGURES l and 5, a handle 72 is also provided to facilitate the positioning of the eccentric 62. Such an arrangement, as is readily apparent, allows the movable second roller 36 to be pivoted away from the fixed axle first roller 28 while preventing movement of the roller 36 toward the roller 28.

A pressure plate 74 is secured to the forward face of the framework 44 and is positioned so as to present a substantially vertical forward pressure receiving face when the rollers 36 and 28 are juxtaposed each other in operative position. This is accomplished by the use of an angled plate having a substantially horizontal leg 76 and a vertical leg 78. Spaced rearwardly of the pressure plate 74 is a rigid vertically extending back plate 80 secured to the base 10 and stabilized by a brace 82. If so desired, a wood spacer 84 may be provided, this spacer 84 being secured by bolts 36 or any other suitable fastening means to the back plate 83. interposed between the pressure plate 74 and the back plate 89 are one or more tire-type air inflatable members 88. These members 88 can, if so desired, consist either of a plurality of conventional automobile or truck tires secured on a common axle 90 and provided with common valve means 92 for the simultaneous inflation of each of the members 88, or a single enlarged member 88. In order to properly position these inflatable members 88, a transverse support 94 may be provided. As readily apparent from the foregoing description, the biasing or urging of the roller 36 can be quickly and effectively varied by the introduction or removal of air from the tire-like members 88.

In order to introduce the material to be crushed between the crushing rollers 28 and 36, a feed chute 96 is provided between the supporting columns 18 and is secured thereto in any conventional manner. Further, it will be noted that thecrushing surfaces of the rollers 28 and 36 can be fluted if so desired.

From the foregoing, it is considered to be readily apparent that a novel rock crusher has been defined which requires a minimum amount of adjustment. As noted supra, the tires are inflated so as to attain the proper pressure between the rollers in order to grind the particular product involved, and, the eccentric shaft is adjusted against the riding shoe to provide the necessary separation between the crushing rollers so as to result in the desired size of the crushed product sought. The use of only two simplified types of adjustments, brought about by the pivoting of the movable roller framework at a point located above the fixed roller, has resulted in a device which is practically trouble-free in operation. In the use of the crusher, the material to be crushed is introduced to a feed chute into the space between the rollers which have been previously adjusted, and, the rollers each driven by an external source of power, roll toward each other so as to crush the product received therebetween. In regard to this matter, attention is also directed to the fact that while the present disclosure has been directed specifically toward the crushing of rocks, the crusher of the present invention can obviously be used to crush various other products such as feed or grain.

The foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly all suitable modifications and equivalents may be resorted to, falling within the scope of the invention as claimed.

What is claimed as new is as follows:

1. A crusher comprising an elongated base, a first roller, means rotatably mounting said first roller transversely of and in a fixed position on said base, an upright support means extending above said first roller rearward of the forward edge thereof, a depending frame means extending from the upper end of the upright support to a point forward of said first roller, means hingedly securing the upper end of the depending frame to the upper end of the upright support in a plane rearward of the forward edge of the first roller thereby enabling the swinging of the depending frame toward and away from said first roller, a second roller, means rotatably mounting said second roller on said depending frame, said second roller being mounted so as to engage said first roller, and means for adjustably limiting the movement of the second roller toward the first roller.

2. The combination of claim 1 including means for resiliently biasing the second roller toward the first roller.

3. A crusher comprising an elongated base, a first roller, means rotatably mounting said first roller transversely of and in a fixed position on said base, an upright support means extending above said first roller rearward of the forward edge thereof, a depending frame means extending from the upper end of the upright support to a point forward of said first roller, means hingedly securing the upper end of the depending frame to the upper end of the upright support in a plane rearward of the forwardedge of the first roller thereby enabling the swinging of the depending frame toward and away from said first roller, 9. second roller, means rotatably mounting said second roller on said depending frame, said second roller being mounted so as to engage said first roller, and means for adjustably limiting the movement of the second roller toward the first roller, said means for adjustably limiting the movement of the second roller to ward the first roller comprising, a shoe mounted on the lower end of the swinging depending frame, a shaft extending transversely of and rotatably mounted on said base rearward of the lower end of said depending frame, an eccentric on said shaft and in engagement with said shoe, and means for adjustably fixing the position of the shaft and eccentric.

4. The combination of claim 3 wherein said last mentioned means include a toothed ratchet wheel mounted on the shaft and a pawl mounted on the base, said pawl being releasably engageable with the teeth of said wheel..

5. The combination of claim 3 including means for resiliently biasing the second roller toward the first roller.

6. The combination of clm'm 5 wherein said means biasing the second roller consist of an abutment on said base forward of the depending frame, and inflatable means positioned between and in engagement with both 7 the abutment and the lower forward end of the depending frame.

7. A crusher comprising an elongated base, a first roller, means rotatably mounting said first roller transversely of and in a fixed position on said base, an upright support means extending above said first roller rearwardv of the forward edge thereof, a depending frame means extending from the upper end of the upright support to a point forward of said first roller, means hingedly securing the upper end of the depending frame to the upper end of the upright support in a plane rearward of the forward edge of the first roller thereby enabling the swinging of the depending frame toward and away from said first roller, a second roller, means rotatably mounting said second roller on said depending frame, said second roller being mounted so as to engage said first roller, means for adjustably limiting the movement of the second roller toward the first roller, and means for resiliently biasing the second roller toward the first roller, said means biasing the second roller consisting of an abutment on said base forward of the depending frame, and inflatable means positioned between and in engagement with both the abutment and the lower forward end of the depending frame.

8. A crusher comprising a supporting base means, a first crushing roller rotatably mounted in a fixed position on said base means, a second crushing roller, a frame means rotatably supporting'said second crushing roller parallel to said first roller, means mounting said frame means on said base means for enabling movement of the frame means in a manner so as to vary the distance between the crushing rollers, means for adjustably fixing the distance between the rollers, said last mentioned means consisting of an eccentric rotatably mounted on the base means between the fixed roller and the movable frame means, said movable frame being in abutting engagement with the eccentric and movable toward and away from said fixed roller upon rotation of said eccentric, and adjustable means resiliently biasing the movable frame means and second roller toward the first roller, said adjustable biasing means consisting of a fixed abutment on the base means spaced from the movable frame means on the opposite side from said first roller and eccentric, and inflatable means positioned between and in engagement with both the fixed abutment and the movable frame means.

References Cited in the file of this patent UNITED STATES PATENTS 759,781 Wallace May 10, 1904 2,564,464 Christopher et a1 Aug. 14, 1951 2,589,603 Cohen Mar. 18, 1952 2,994,485 Elwick Aug. 1, 1961 3,105,435 Kendzia Oct, 1, 1963 

1. A CRUSHER COMPRISING AN ELONGATED BASE, A FIRST ROLLER, MEANS ROTATABLY MOUNTING SAID FIRST ROLLER TRANSVERSELY OF AND IN A FIXED POSITION ON SAID BASE, AN UPRIGHT SUPPORT MEANS EXTENDING ABOVE SAID FIRST ROLLER REARWARD OF THE FORWARD EDGE THEREOF, A DEPENDING FRAME MEANS EXTENDING FROM THE UPPER END OF THE UPRIGHT SUPPORT TO A POINT FORWARD OF SAID FIRST ROLLER, MEANS HINGEDLY SECURING THE UPPER END OF THE DEPENDING FRAME TO THE UPPER END OF THE UPRIGHT SUPPORT IN A PLANE REARWARD OF THE FORWARD EDGE OF THE FIRST ROLLER THEREBY ENABLING THE SWINGING OF THE DEPENDING FRAME TOWARD AND AWAY FROM SAID FIRST ROLLER, A SECOND ROLLER, MEANS ROTATABLY MOUNTING SAID SECOND ROLLER ON SAID DEPENDING FRAME, SAID SECOND ROLLER BEING MOUNTED SO AS TO ENGAGE SAID FIRST ROLLER, AND MEANS FOR ADJUSTABLY LIMITING THE MOVEMENT OF THE SECOND ROLLER TOWARD THE FIRST ROLLER. 